The utility model belongs to the technical field of on -vehicle electric power is equipped with the guarantee technologically and specifically relates to a get trolley -bus for on -vehicle uninterrupted power source system is related to. Its characteristics are including van, and van is last to install the power take -off generate electricity device, mix energy memory and supply the distribution unit, and van's railway carriage or compartment body both sides are provided with lithium battery pack, zinc bromine group battery, battery control unit respectively, synthesize the electrical controldevice, supply distribution unit and contravariant fairing, and the rear portion of the railway carriage or compartment body is provided with the overhaul of the equipments door, and railway carriageor compartment body upper portion is provided with the ventilation cooling device, and the railway carriage or compartment is internal installs the energy memory mounting bracket through the isolator,the energy memory mounting bracket on be provided with mixed energy memory and energy memory control panel, the van lower part still be provided with the hydraulic pressure leveling and support. Itsintegrated level is high, mobility is strong, security and good reliability.